. >>> number two now, the obama administration is urging the supreme court to strike down a federal law that denies benefits to married same sex couples. the defense of marriage act or doma describes marriage only between a man or woman. in a brief timed, doma treats gay and lesbian couples unequally violating the constitution. the court will hear argument next month. >>> last week, revealed a nuclear waste tank at a washington facility was leaking. now the governor says six tanks at the hanford nuclear site are leaking toxic sludge. he says there's no immediate health risk to the public but calls the leak disturbing. the facility is considered to be the nation's most contaminated nuclear site. >>> number four now. the pentagon grounded the entire fleet of f-35 fighter jets because a crack was found in the engine of one of the planes dungbillion, the f-35 program is the most expensive weapon system in military history. number five, police are on an intense manhunt foreign the occupants of a range rover involved in a las vegas shooting. shots fired from that car killed the driver of a ma